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7.9 SIP Setting – Others
This section is for network administrators.
Session Timer
The time interval in which the phone periodically refresh
SIP sessions by sending repeated INVITE requests. These
INVITE requests allow the user agent or proxies to
determine the status of the SIP session.
Media Port
Real-time Transport Protocol port number. Provides end-
to-end transfer of data with real-time audio.
Prack
Prack ensures that media information is exchanged and
that network checks before connecting the call. Select
Enable for a more reliable connection.
Session Refresher
Select None to disable SIP session timer support.
Select UAC to initiate SIP request.
Select UAS to receive SIP request and then return a
response.
Session Timer Method
Select SIP request method. Default method is Invite.
UDP/TCP
Select SIP signal transmission method. Default method is
UDP.